Home / 769,890.60-1,153,086.30-486,455.40

Finding the Fourth Proportional to 769,890.60, 1,153,086.30 and 486,455.40

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Solution

The fourth proportional to 769,890.60, 1,153,086.30 and 486,455.40 is: 728,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,890.60 : 1,153,086.30 = 486,455.40 : x
  2. Step 2: Convert to fraction form
    769,890.60/1,153,086.30 = 486,455.40/x
  3. Step 3: Cross multiply
    769,890.60x = 1,153,086.30 × 486,455.40
  4. Step 4: Simplify right side
    769,890.60x = 560,925,057,301.02
  5. Step 5: Solve for x
    x = 560,925,057,301.02/769,890.60
  6. Step 6: Final answer
    x = 728,577.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.